Patent
   D878839
Priority
Oct 13 2017
Filed
Feb 12 2018
Issued
Mar 24 2020
Expiry
Mar 24 2035
Assg.orig
Entity
unknown
0
30
n/a
The ornamental design for chair back, as shown and described.

FIG. 1 is a front view of a chair back showing my new design;

FIG. 2 is a back view of a chair back;

FIG. 3 is a left side view of a chair back;

FIG. 4 is a right side view of a chair back;

FIG. 5 is a top view of a chair back;

FIG. 6 is an upward view of a chair back; and,

FIG. 7 is a perspective view of a chair back.

Ding, Wenting

Patent Priority Assignee Title
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Executed onAssignorAssigneeConveyanceFrameReelDoc
Feb 12 2018HANGZHOU TUXIAN HOUSEHOLD PRODUCTS CO., LTD.(assignment on the face of the patent)
Feb 12 2018DING, WENTINGHANGZHOU TUXIAN HOUSEHOLD PRODUCTS CO , LTD ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0453090965 pdf
Sep 04 2020HANGZHOU TUXIAN HOUSEHOLD PRODUCTS CO , LTD HANGZHOU ZHANYING TECHNOLOGY CO , LTD ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0537040851 pdf
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